ViewSonic VA2759-smh input lag and response time measured with the piLagTester PRO

I tested a used ViewSonic VA2759, made in 2016. Only seems to support 75hz refresh rates and below (but does scan out at 75hz).

It offers a "game" mode, but this only changes the color profile, all timing is identical across all "modes".

It does offer an option to change response time, from "standard" to "ultrafast". This did change response time, but not input lag. 

Input lag in the upper corner is 2.5ms. Response time in standard mode is an additional 10ms. Switching to Ultrafast it drops to 7ms. The luminance curves over time show no ugly artifacts in "ultrafast", at least in the black to white transition. 

It accepts interlaced video, which is displayed using BOB deinterlacing. 

Colors looked fine, but viewing angles seemed a tad narrow for an IPS.